Electrically-operated vibrator.



H. Z. SANDS.

BLBGTRIGALLY OPERATED VIBRATOR.

APPLICATION FILED JULY 10, 1908.

Patented 0011.211911.

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. instrument.

UNITED STATES PATENT OFFICE.

HARRY Z. SANDS, OF CLEVELAND, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO TI-IE ROYAL SPECIALTY COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

ELECTRICALLY-OPERATED VIBRATOR.

Specification of Letters Patent.

Patented Oct. 24, 1911.

Application led July 10, 1908. Serial N o. 442,894.

To all whom it may concern:

Be it known that I, I-IARRY Z. SANDS, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Electrically- 4Operated Vibrators, and do declare that the following is a full, clear, and exact description -of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an electrically operated vibrator, the same being constructed and adapted to operate substantially as shown and described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation partly in section of my improved vibrator, and Fig. 2 is a sectional elevation of the lower portion thereof. Figs. vv3, 4, 5, 6 and 7 are detail and sectional views respectively, as hereinafter fully described, Fig. 3 being a cross section on line w-x, Fig. 2, showing the balancing weight. Fig. 4 is a perspective view of the applicator spindle. Fig. 5 is a cross section on line g/-y, Fig. 2, and Fig. 6 is a cross section on line e-e, Fig. 2. Fig. 7 is a plan of the blank flexible washer for the ball of the spindle.

C represents the casing or shell of the E is t-he armature and S the armature shaft. D is a frame or support of basket shape, as seen in Fig. 2, for the armature and has a bearing b in its bottom for said shaft. In outline the said casing is substantially pear shape, and has slots t lengthwise through the neck or point c thereof, which enable the said point to be more or less compressed or to spring its sections toward each other inward under engagement by nut N. In this instance, the said 4point is divided into three lequal sections by said slots, but there might be two or more sections, and the material being-of a springy character it has all the yield or surrender needed to engage the spindle Gr therein. To these ends the extremity of the said point c is tapered externally and threaded over said tapered portion to receive the substantially ring shaped nut N, which is internally tapered and threaded to screw upon said point and adapted to more or less compress the sub-divisions thereof as it is more or less turned on. Said point is somewhat enlarged or deepened on the inside to form a rounded bearing, preferably of ball shape, for the rounded or ball shaped enlargement 5 on the applicator spindle G. Said enlargement or ball is nearest the outer end of said spindle and said spindle has a tubular or cylindrical inner portion abo-ve said ball in which is socketed an actuating part J, which has a right angled end projecting transversely through the extremity of shaft S, and eccentrically set as to said shaft but centrally as to spindle G, whereby an oscillating or gyratory movement is imparted t0 the spindle. Said part J is rotated by said shaft but free to turn in said spindle, and a pin 6 transversely through a hole 8 in the ball 5 of said spindle is engaged at its ends in the wall of the casing. rThe hole 8 through said ball for said pin is enough larger than the pin to give the spindle all the desired room for oscillation or gyration on its outer bearing and yet is kept from rotation by said pin.

A leather washer 7 or its equivalent, en velops ball 5 in its bearing, and the said bearing is such that when the ball is placed therein, with its washer, and nut N is tightened, the nut will, in a sense, clamp and 'confine the ball in or within the bearing in said point c 4and hold it there in working relation and against possible dropping or working out. I therefore depend on this clamping effect, obtained by sub-dividing the point c into spring or yielding sections, for operatively engaging the spindle, and it is conned against rotation or turning with connection J by cross-pin 6. The applicator A has threaded engagement in or with the outer end of said spindle, and a counter balance or weight 10 for the applicator is aflixed by screw l1 to the end of shaft S opposite the point of engagement of right angled part J therewith. A spiral spring 12 is wound about the exposed end of said pa-rt J where it passes through shaft S and holds the said parts operatively on said shaft.

The field of the motor is built up of laminated plates 15, as shown in Fig. l, for the purpose of reducing the eddy-currents, and avoiding the heating of the motor. To further this end, the casing is made of open form; being provided with longitudinal slots 14C. Both the upper and the lower openings through the casing provide for ventilation, and the balance weight 10 is designed primarily to minimize the vibration at the handle, the vibration being absorbed thereby, in large measure. lt will be appreciated that the counterbalancing effect may be secured by suitably positioning the weight substantially opposite the applicator, and upon either vof the actuating members, but preferably adjacent to their eccentric connection.

Any suitable motor-device may, of course, be employed in practicing my invention, but an electric-motor, such as is shown and described, best lends itself to this purpose.

What I claim is:

l. A vibrator casing having a tapered end split longitudinally and provided with a substantially spherical bearing inside of said split portion, and an applicator and a spindle therefor having a spherical portion between its ends engaged in said bearing, and a tapered nut engaged over said split end confining said spindle.

2. A vibrator casing having a tapered end split longitudinally into a plurality of sections and said sections having a substantially spherical inner bearing, in combination with a vibrator and a spindle therefor having a substantially spherical portion engaged in said bearing and a tapered nut over the said tapered end.

3. The casing having an externally tapered end sectioned lengthwise and provided with a round bearing inside, an applicator spindle having a rounded enlargement in said bearing and an internally tapered nut over said end adapted to compress the same and thus confine said spindle in said bearing, and a pin loosely engaged through said enlargement and iiXed oppositely at its ends in said casing, whereby the spindle is kept from rotating.

4L. rlhe casing having a tapered end with a series of slots lengthwise and a ball shaped bearing within, in combination with an armature shaft, a spindle operatively supported in said bearing and an applicator fixed to said spindle, an eccentric connection between said spindle and shaft, means to prevent said spindle from rotating, and a balancing weight secured adjacent to the juncture of said shaft and eccentric connection to neutralize the vibrations of the casing.

5. rlhe casing and the armature and the shaft therefor, in combination with the applicator and the spindle carrying the same, an eccentric operating connection between said spindle and shaft and a balancing weight attached to the end of said shaft next to said eccentric operating connection and adapted to neutralize the vibrations to the casing.

6. In vibrators for massaging and the like, a suitable casing and handle and an applicator, a power driven shaft and eccentrically mounted operating parts engaged therewith adapted to impart vibrations to the applicator, and a counterweight connected with said parts adapted to relieve the said handle of vibratory effects.

7. In a vibrator appliance, the combination with a motor device, of an applicatormounting member eccentrically connected for actuation thereby, said applicator mounted thereon, a suitable casing or frame, and a counterweight opposing the applicator for minimizing the vibration of the frame.

8. In vibrators, a casing and a shaft therein and means to operate the shaft, an applicator and means to impart vibrations thereto eccentrically engaged with said shaft, and a counterbalance connected with one of said parts substantially in the axis of said shaft and adapted to neutralize the vibrations to said casing, whereby the casing is relieved of vibrations while the applicator is doing its work.

9. A casing and a shaft therein, in combination with a pivotally mounted member eccentrically connected with said shaft, an applicator thereon, and a counterbalance substantially at the junction of said parts adapted to minimize vibrations to said casing.

In testimony whereof I sign this specification in the presence of two witnesses.

HARRY Z. SANDS.

Witnesses:

E. M. FISHER, F. C. MUssUN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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